Built-up polarized relay



July 31, 1962 J. KOHOUTEK ETAL 3,047,691

BUILT-UP POLARIZED RELAY Filed July 19, 1960 Z/Sheets-Sheet 1 July 31, 1962 J. KoHoUTEK ETAL BUILT-UP POLARIZED RELAY 2 sheets-sheet 2 Filed July 19. 1960 INVENTORS A JAW/ey Va/gf BY /FO United States PatentOiifice Patented July 31, 1962 3,047,691 BUILT-UP PGLARIZED RELAY Jindich Kohoutek and Olaf Kozeny, .lablonec on Nisa, Czechoslovakia, assigner-s to Zavody Jana Sverrny, Brno, Czechoslovakia Filed July 19, 1960, Ser. No. 43,908 Claims priority, application Czechoslovakia July 21, 1959 Claims. (Cl. 20G- 93) The present invention relates to a built-up polarized relay and more particularly to a relay for calculating machines. The primary object of the invention is the provision of relays a great number of which may be accommodated in a limited space. Another object is the provision of a relay capable of easy assembly and wiring and permitting a general lay-out of the relay installation which is easy to inspect. The use of the relay according to the invention is, of course, in no way restricted to calculating machines, and the relay can be used to advantage also for telephone exchanges and the like.

The relay according to the present invention is of the four-contact type, but it can be changed to a two-contact relay by a simple adjustment without in any way impairing its character as a built-up relay.

It is a disadvantage of the heretofore known relays of this type that an assembly of a plurality of such relays requires special structural members, such as sockets, brackets and the like which make the general outlay of the assembly complicated. Such known relays are usually secured to a carrier plate which itself requires considerable space. The current circuits in relays of the conventional type can be connected in one plane only and not in three dimensions. When several superposed carrier plates are employed', connections cannot be made in straight lines, which is disadvantageous from the economic as well as the technical point of view since the operating speed of the relay circuits is limited by the capacitative coupling of the connections.

Conventional multi-contact polarized relays are not easily accessible and are, therefore, usually replaced by a plurality of single-contact polarized relays; such a replacement is, of course, objectionable. The known relays require not only a plurality of accurately manufactured component parts but also precise and careful assembly. For this reason, the known relays are comparatively expensive. In some relay designs, the moving members are not sufficiently protected against mechanical damage or against dust andother atmospheric influences. It is customary, therefore, to provide separate covers for each individual relay, but this is rather unsatisfactory.

The present invention generally aims at overcoming the aforesaid and other shortcomings of known built-up relays.

According to the invention, the relay includes an insulating body consisting of two identical parts, each having substantially the shape of the letter H. The web portion of each H-type body constitutes one half of a coil former on which the exciting coil of the relay iswound. Recesses in the iiange portions of the body parts accommodate polarizing magnetic units. Other recesses in the flange portions are provided for tongueshaped relay armatures, and the contacts cooperating with the armatures are also inserted in the anges. The arrangement is such that the tongue-like armatures are located in the plane of contact between the two parts of which the relay body is composed.

Other features of the relay of the invention as well as additional advantages thereof will become apparent from the following disclosure of a preferred embodiment thereof when taken with the accompanying drawings in which:

FIG. 1 is an axonometric view of a four-contact relay of the invention.

FIGS. 2a and 2b show the two body parts of the relay of FIG. l in a corresponding exploded view.

FIG. 3 is an axonometric view of the magnetic and electrical components of the relay of FIG. 1.

FIG. 4 shows a detail of the apparatus of FIG. 3 on an `enlarged scale, and

FIG. 5 shows a terminal arrangement for the relay of FIG. 1.

The insulating body of the relay is preferably made by moulding from a synthetic material, and consists of two identical parts lil. Each part has the shape of the letter H with two anges 11, connected by a web 12.. The flanges 11 and the web 12 have respective raised rims 112 and 121. When the two body parts 10 are placed upon one another, a cavity is formed between the two Webs 12 and serves to accommodate a core Z1 of an electromagnet as will be described hereinafter. Several recesses are arranged in the flanges 11.

Adjacent the ends of each ange 11, there are recesses 11i) which receive a magnetic polarizing unit 30 including pole pieces and polarizing magnets. Longitudinal recesses 111 are intendedv to accommodate tongueshaped armatures 22 of the electromagnet and pole pieces 210 of the core 21. Recesses 113 in the external body faces parallel to the contact plane of the two parts accommodate terminals for the relay contacts, and finally there are recesses 114 at the longitudinal sides of each flange 11 providing space for the conductors connecting several superposed or juxtaposed relays. The opposite faces 115 of the flanges 11 of each body part 10 constitute the end plates of a former on which an exciting coil 20 is wound about the core 21. Due to the smoothness of the faces 115, the exciting coil can be wound without diiiiculty, and needs no special insulation because of the insulating qualities of the material from which the two body members 10 are moulded.

Each part 1t) has at its outer side a flat seating face 116, which serves as an abutment or support for an adjacent relay. A multitude of relays may be assembled by placing them upon one another without any special carrier members. The relative position of two assembled body parts 11i as well as the relative position of several superposed relays are secured by connecting members such as pins which are inserted into aligned apertures 118 in the body parts 10.

In the recesses 113, the body parts 10 are further provided with openings 117 which receive contact screws 23. Adjacent the openings 117 metal terminal lugs 230 having soldering eyelets are press-fitted in conforming recesses of the body parts, the screws 23 engaging mating threads provided in the lugs (see FIG. 5).

The main magnetic circuit of the relay includes the core 21 lwhich may consist of two identical halves on both ends of which pairs of laterally oppositely projecting tongue-shaped armatures 22 are mounted in respective insulating blocks 24. The free ends of the armatures 22 are movably arranged between pole pieces 31 of permanent polarizing magnets 32. The tongue-shaped armatures 22 constitute contact springs which make alternate contact with oppositely arranged contact screws 23. The armatures 22 are provided with connecting eyelets 220.

An important feature of the main magnetic circuit is the pole-extensions 210 which project laterally from the core 21 on two sides of each armature 22 from which they are separated by respective air gaps M. The pole extensions 210 reduce the intensity of magnetic leakage fields and concentrate the magnetic flux of the electromagnet in the air gaps M. Each magnetic polarizing unit 30 comprises two pole pieces 31, having each the shape of a at letter U, Ibetween which permanent magnets 32 are inserted with equal poles facing in the same direction. The magnets 32 are secured in grooves 310 provided in the pole pieces 31.

As shown in FIG. 4, two armatures 22 are inserted in an insulatinlg block 24, the whole assembly being held under pressure in a conforming recess of the core 21. If desired, the core 21 may consist of two parts placed upon one another and held together in the cavity between the webs 12 when the body parts `10 are assembled.

If a two-contact relay is desired instead of the aforedescribed four-contact arrangement, a core having two armatures is substituted for the core 21 having four armatures 22. The two armatures of course cooperate with a single magnetic polarizing unit 30. The other unit 3l) is in this case dispensed `with entirely.

It will be understood that the foregoing disclosure relates to only a preferred embodiment of the invention and numerous modifications may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims.

We claim:

1. A polarized relay comprising two substantially identical lbody parts of insulating material, each body part having two flange portions and a web portion integrally connecting said fiange portions; fastening means for securing said body parts to each other with the respective flange and web portions of one body part superimposed on the corresponding portions of the other body part, said parts when secured to each other constituting the body of said relay and substantially defining the external dimensions thereof, said web portions jointly defining a coil former having an internal cavity; a magnetizable core in said cavity, said body being formed with a first recess extending in at least one of said iange portions and com municating with said cavity, and with a second recess spaced from said cavity and communicating with said first recess; a plurality of windings on said coil former for magnetizing said core and energizing a magnetic field thereof; polarizing magnet means mounted in said second recess, said magnet means having spaced pole piece means; an elongated armature member mounted in said rst recess, said armature member having one portion located in said magnetic field and another movable portion partly interposed between said pole piece means; and cooperating contact means on said movable armature portion and on said body in one of said recesses for opening and closing a circuit when said movable armature member portion moves between said pole piece means.

2. A relay as set forth in claim 1, wherein said body parts define a contact plane therebetween, said plane extending in each of said recesses.

3. A relay as set forth in claim 2, wherein said recesses each extend in the two corresponding flange portions of said body parts adjacent said contact plane.

4. A relay as set forth in claim l, wherein said one portion of said armature member is mounted on said core.

5. A relay as set forth in claim 4, further comprising an insulating block, said core being formed with a recess receiving said block, and said armature member being mounted on said block within the magnetic field of said core and electrically insulated from the latter.

6. A reiay as set forth in claim 5, wherein said core .is composed of two parts holding said insulating block therebetween.

7. A relay as set forth in claim l, wherein said con- Y.tact means on said body is positioned in said first recess for abutment against said movable armature member portion when the latter moves toward one of said pole pieces.

8. A relay as set forth in claim 1, further comprising a terminal member conductively connected to said contact means, said `body being formed with a third recess, said terminal member 'being mounted in said recess.

9. A relay as set forth in claim 1, one of said body parts having an external supporting face, and said relay further comprising means for securing another substantially identical relay to said supporting face.

10. A polarized relay comprising two substantially identical body parts of insulating material, each body part having two flange portions and a web portion integrally connecting said flange portions; fastening means for securing said body parts to each other with the respective flange and web portions of one body part superimposed on the corresponding portions of the other body part to form respective pairs of superimposed portions, said parts when secured to each other constituting the body of said relay and substantially defining the external dimensions thereof, said web portions jointly defining a coil former having an internal cavity; a magnetizable core in said cavity, said body being formed with a rst and a second recess respectively extending in at least one of the ange portions of the two pairs of superimposed flange portions and communicating with respective terminal portions of said cavity, and with a third and a fourth recess in respective ones of said pairs of flange portions, said third and fourth recesses being spaced from said cavity and respectively communicating with said first and second recesses; a plurality of windings on said coil former for magnetizing said core and energizing a magnetic eld thereof; polarizing magnet means including two pole pieces each having respective portions mounted in said third and fourth recesses, the pole piece portions in each of said third and fourth recesses defining an air gap therebetween, and a magnet having two poles respectively connected to said pole pieces for magnetizing the same; an elongated armature mem-ber mounted in each of said first and second recesses, said armature member having one portion located adjacent a terminal portion of said core and in said magnetic field thereof, and another portion partly located in a corresponding one of said gaps; and cooperating contact means on each of said movable armature member portions and on said body in said lirst and second recesses respectively for opening and closing a respective circuit when said movable armature member portion moves in the corresponding gap between said pole pieces.

References Cited in the tile of this patent UNITED STATES PATENTS 2,443,784 Bullen et al. June 22, 1948 2,882,461 Glassow Apr. 14, 1959 2,884,498 Fisher Apr. 28, 1959 2,928,915 Vigren et al. Mar. 15, 196() 

